Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 20210929 Title: Shorelines of the Florida west coast (FLwc) coastal region used in shoreline change analysis Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9J3CVN4 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Online_Linkage: https://doi.org/10.5066/P9J3CVN4 Online_Linkage: https://www.sciencebase.gov/catalog/item/614a7c8fd34e0df5fb9756e1 Larger_Work_Citation: Citation_Information: Originator: Meredith G. Kratzmann Originator: Amy S. Farris Originator: Kathy M. Weber Originator: Rachel E. Henderson Originator: Emily A. Himmelstoss Publication_Date: 2021 Title: USGS National Shoreline Change: A GIS compilation of Updated Vector Shorelines (1800s - 2010s) and Associated Shoreline Change Data for the Georgia and Florida Coasts Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9J3CVN4 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: suggested citation: Kratzmann, M.G., Farris, A.S., Weber, K.M., Henderson, R.E., and Himmelstoss, E.A., 2021, USGS National Shoreline Change: A GIS compilation of Updated Vector Shorelines (1800s - 2010s) and Associated Shoreline Change Data for the Georgia and Florida Coasts: U.S. Geological Survey data release, https://doi.org/10.5066/P9J3CVN4 Online_Linkage: https://doi.org/10.5066/P9J3CVN4 Online_Linkage: https://www.sciencebase.gov/catalog/item/612cf2a3d34e40dd9c08844b Description: Abstract: During Hurricane Irma in September 2017, Florida and Georgia experienced significant impacts to beaches, dunes, barrier islands, and coral reefs. Extensive erosion and coral losses result in increased immediate and long-term hazards to shorelines that include densely populated regions. These hazards put critical infrastructure at risk to future flooding and erosion and may cause economic losses. The U.S. Geological Survey (USGS) Coastal and Marine Hazards Resources Program (CMHRP) is assessing hurricane-induced coastal erosion along the southeast US coastline and implications for vulnerability to future storms. Purpose: Shoreline positions were compiled prior to and following Hurricane Irma along the sandy shorelines of the Gulf of Mexico and Atlantic coasts of Florida and the coast of Georgia. Shoreline positions from the mid-1800s through 2018 were used to update the shoreline change rates for Florida and Georgia using the Digital Shoreline Analysis System (DSAS) software. The shoreline positions and updated shoreline change rates provide actionable information to homeowners, coastal communities, and managers of public and private properties to improve resiliency for long-term hazards. Georgia (GA): The Georgia dataset includes shorelines from 161 years ranging from 1855 to 2016. Shorelines were compiled from topographic survey sheets (T-sheets; National Oceanic and Atmospheric Administration (NOAA)) and lidar (USGS/NOAA/National Aeronautics and Space Administration (NASA), NOAA/U.S. Army Corps of Engineers (USACE) National Coastal Mapping Program (NCMP)/Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX)). Florida east coast (FLec): border with GA to Key Biscayne The FLec dataset includes shorelines from 166 years ranging from 1851 to 2017. Shorelines were compiled from topographic survey sheets (T-sheets; NOAA, NOAA/Florida Department of Environmental Protection (FLDEP)), aerial photographs (FLDEP/USGS), and lidar data (USGS/NASA, USACE/Federal Emergency Management Agency (FEMA), NOAA/USACE NCMP). Florida west coast (FLwc): Anclote Key to Barefoot Beach The FLwc dataset includes shorelines from 159 years ranging from 1858 to 2017. Shorelines were compiled from topographic survey sheets (T-sheets; NOAA, NOAA/FLDEP), aerial photographs (FLDEP/USGS), and lidar data (USGS/NASA, USACE/FEMA, NOAA/USACE NCMP). Florida panhandle (FLph): Bald Point State Park to the Alabama border The FLph dataset includes shorelines from 163 years ranging from 1855 to 2018. Shorelines were compiled from topographic survey sheets (T-sheets; NOAA, NOAA/FLDEP), aerial photographs (FLDEP), and lidar data (USGS/NASA, USACE/FEMA, NOAA/USACE NCMP). Historical shoreline positions serve as easily understood features that can be used to describe the movement of beaches through time. These data are used to calculate rates of shoreline change in support of the U.S. Geological Survey's Coastal Change Hazards programmatic focus to maintain a national scale database of shoreline positions and rates. Long-term and short-term shoreline change rates were generated in a GIS using the Digital Shoreline Analysis System (DSAS) version 5. DSAS uses a measurement baseline method to calculate rate-of-change statistics. Transects are cast from the reference baseline to intersect each shoreline, establishing measurement points used to calculate shoreline change rates. Supplemental_Information: Cross-referenced citations are applicable to the dataset as a whole. Additional citations are located within individual process steps that pertain specifically to the method described in that step. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1858 Ending_Date: 2017 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -82.852570 East_Bounding_Coordinate: -81.682230 North_Bounding_Coordinate: 28.215572 South_Bounding_Coordinate: 25.847017 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Theme_Keyword: environment Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Baseline Theme_Keyword: Shoreline Theme_Keyword: Shoreline Change Theme_Keyword: Digital Shoreline Analysis System Theme_Keyword: DSAS Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: National Oceanic and Atmospheric Administration Theme_Keyword: NOAA Theme_Keyword: National Aeronautics and Space Administration Theme_Keyword: NASA Theme_Keyword: U.S. Army Corps of Engineers Theme_Keyword: USACE Theme_Keyword: Joint Airborne Lidar Bathymetry Technical Center of eXpertise Theme_Keyword: JALBTCX Theme_Keyword: Florida Department of Environmental Protection Theme_Keyword: FLDEP Theme_Keyword: Federal Emergency Management Agency Theme_Keyword: FEMA Theme_Keyword: Mean High Water Theme_Keyword: MHW Theme_Keyword: High Water Line Theme_Keyword: HWL Theme: Theme_Keyword_Thesaurus: USGS thesaurus Theme_Keyword: geospatial datasets Theme_Keyword: coastal processes Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:614a7c8fd34e0df5fb9756e1 Place: Place_Keyword_Thesaurus: None Place_Keyword: Atlantic Coast Place_Keyword: Gulf Coast Place_Keyword: United States Place_Keyword: North America Place_Keyword: Georgia Place_Keyword: Florida Access_Constraints: None Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset. These data are not to be used for navigation. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Meredith G. Kratzmann Contact_Address: Address_Type: mailing and physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: mkratzmann@contractor.usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/614a7c8fd34e0df5fb9756e1?name=BG_FLwc_shorelines.jpg Browse_Graphic_File_Description: Map view of data Browse_Graphic_File_Type: jpg Native_Data_Set_Environment: Microsoft Windows 10 Enterprise; Esri ArcGIS 10.7.1 Cross_Reference: Citation_Information: Originator: Meredith G. Kratzmann Publication_Date: 2022 Title: U.S. Geological Survey National Shoreline Change: Summary Statistics for Updated Vector Shorelines (1800s - 2010s) and Associated Shoreline Change Data for the Georgia and Florida Coasts Series_Information: Series_Name: Data Report Issue_Identification: 1156 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Data Report associated with this data release: Kratzmann, M.G., Farris, A.S., Weber, K.M., Henderson, R.E., and Himmelstoss, E.A., 2021, USGS national shoreline change-A GIS compilation of updated vector shorelines (1800s - 2010s) and associated shoreline change data for the Georgia and Florida Coasts: U.S. Geological Survey data release, https://doi.org/10.5066/P9J3CVN4. Online_Linkage: https://doi.org/10.3133/dr1156 Cross_Reference: Citation_Information: Originator: Emily A. Himmelstoss Originator: Amy S. Farris Originator: Rachel E. Henderson Originator: Meredith G. Kratzmann Originator: Ayhan Ergul Originator: Ouya Zhang Originator: Jessica L. Zichichi Publication_Date: 2018 Title: Digital Shoreline Analysis System (version 5): U.S. Geological Survey Software Series_Information: Series_Name: software release Issue_Identification: version 5 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Current version of software at time of use was 5.1 Online_Linkage: https://doi.org/10.5066/P9VW42I0 Online_Linkage: https://code.usgs.gov/cch/dsas/ Online_Linkage: https://www.usgs.gov/centers/whcmsc/science/digital-shoreline-analysis-system-dsas Cross_Reference: Citation_Information: Originator: Emily A. Himmelstoss Originator: Rachel E. Henderson Originator: Meredith G. Kratzmann Originator: Amy S. Farris Publication_Date: 2018 Title: Digital Shoreline Analysis System (DSAS) Version 5.0 User Guide Geospatial_Data_Presentation_Form: publication Series_Information: Series_Name: Open-File Report Issue_Identification: 20181179 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20181179 Online_Linkage: https://www.usgs.gov/centers/whcmsc/science/digital-shoreline-analysis-system-dsas Cross_Reference: Citation_Information: Originator: Emily Himmelstoss Originator: Meredith Kratzmann Originator: E. Robert Thieler Publication_Date: 2017 Title: National Assessment of Shoreline Change: A GIS compilation of Updated Vector Shorelines and Associated Shoreline Change Data for the Southeast Atlantic Coast Series_Information: Series_Name: Data release Issue_Identification: doi:10.5066/F74X55X7 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F74X55X7 Cross_Reference: Citation_Information: Originator: Emily Himmelstoss Originator: Meredith Kratzmann Originator: E. Robert Thieler Publication_Date: 2017 Title: National Assessment of Shoreline Change: A GIS compilation of Updated Vector Shorelines and Associated Shoreline Change Data for the Gulf of Mexico Coast Series_Information: Series_Name: Data release Issue_Identification: doi:10.5066/F78P5XNK Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F78P5XNK Cross_Reference: Citation_Information: Originator: Emily Himmelstoss Originator: Meredith Kratzmann Originator: E. Robert Thieler Publication_Date: 2017 Title: National assessment of shoreline change — Summary statistics for updated vector shorelines and associated shoreline change data for the Gulf of Mexico and Southeast Atlantic coasts Series_Information: Series_Name: Open-File Report Issue_Identification: 2017-1015 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20171015 Cross_Reference: Citation_Information: Originator: Robert A. Morton Originator: Tara L. Miller Publication_Date: 2005 Title: National Assessment of Shoreline Change: Part 2 Historical Shoreline Changes and Associated Coastal Land Loss along the U.S. Southeast Atlantic Coast Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1401 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20051401 Cross_Reference: Citation_Information: Originator: Tara L. Miller Originator: Robert A. Morton Originator: Asbury H. Sallenger Publication_Date: 2005 Title: The National Assessment of Shoreline Change: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the U.S. Southeast Atlantic Coast Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1326 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20051326 Cross_Reference: Citation_Information: Originator: Robert A. Morton Originator: Tara L. Miller Originator: Laura J. Moore Publication_Date: 2004 Title: National Assessment of Shoreline Change: Part 1 Historical Shoreline Changes and Associated Coastal Land Loss along the U.S. Gulf of Mexico Series_Information: Series_Name: Open-File Report Issue_Identification: 2004-1043 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20041043 Cross_Reference: Citation_Information: Originator: Tara L. Miller Originator: Robert A. Morton Originator: Asbury H. Sallenger Originator: Laura J. Moore Publication_Date: 2004 Title: The National Assessment of Shoreline Change: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the U.S. Gulf of Mexico Series_Information: Series_Name: Open-File Report Issue_Identification: 2004-1089 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20041089 Cross_Reference: Citation_Information: Originator: Peter Ruggiero Originator: Jeffrey H. List Publication_Date: 200909 Title: Improving Accuracy and Statistical Reliability of Shoreline Position and Change Rate Estimates Geospatial_Data_Presentation_Form: publication Series_Information: Series_Name: Journal of Coastal Research Issue_Identification: vol. 255 Publication_Information: Publication_Place: n/a Publisher: Coastal Education and Research Foundation Other_Citation_Details: pp. 1069-1081 Online_Linkage: https://doi.org/10.2112/08-1051.1 Cross_Reference: Citation_Information: Originator: Amy S. Farris Originator: Kathryn M. Weber Originator: Kara S. Doran Originator: Jeffrey H. List Publication_Date: 2018 Title: Comparing methods used by the U.S. Geological Survey Coastal and Marine Geology Program for deriving shoreline position from lidar data Series_Information: Series_Name: Open-File Report Issue_Identification: 2018–1121 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20181121 Cross_Reference: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS) Publication_Date: Unknown Title: Scanned National Ocean Service (NOS) Coastal Survey Maps (also known as Topographic Survey sheets, or T-sheets) Series_Information: Series_Name: NOAA shoreline manuscripts (T-sheets) Issue_Identification: n/a Publication_Information: Publication_Place: Washington, D.C. Publisher: National Oceanic and Atmospheric Administration Online_Linkage: https://shoreline.noaa.gov/data/datasheets/t-sheets.html Cross_Reference: Citation_Information: Originator: Kathryn M. Weber Originator: Jeffrey H. List Originator: Karen L.M. Morgan Publication_Date: 2005 Title: An operational mean high water datum for determination of shoreline position from topographic lidar data Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1027 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20051027 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The data provided here are a compilation of shorelines from multiple sources, spanning >150 years. The attributes are based on the requirements of the Digital Shoreline Analysis System (DSAS) software and have gone through a series of quality assurance procedures. Logical_Consistency_Report: Adjacent shoreline segments do not overlap and are not necessarily continuous. Shorelines were quality checked for accuracy. Any slight offsets between adjacent segments due to georeferencing and digitizing error are taken into account in the uncertainty of the shoreline position, as reported in the horizontal accuracy section of this metadata file. Completeness_Report: This shoreline file is complete and contains all shoreline segments used to calculate shoreline change rates along sections of the Florida west coast (FLwc) coastal region where shoreline position data were available. These data adequately represented the shoreline position at the time of the survey. Remaining gaps in these data, if applicable, are a consequence of non-existing data or existing data that did not meet quality assurance standards. The digitized shoreline vectors downloaded from NOAA included attributes defining the shoreline type (attribute field name varies by file). For the open-ocean coasts, only shoreline features (Natural.Mean High Water; SPOR; 20) were retained. Other shoreline features (such as seawalls, bulkheads, manmade objects) were deleted. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The horizontal accuracy of the shoreline data varies with respect to the data source from which the shorelines were digitized, the lidar data from which the shorelines were extracted, and the time period. Georgia and Florida: Shorelines prior to 1960 (T-sheets) have an estimated positional uncertainty of plus or minus 10.8 meters. Shorelines from the 1960s-1980s (T-sheets) have an estimated positional uncertainty of plus or minus 5.1 meters. Shorelines from the 1950s-1970s (FLDEP, air photos) have an estimated positional uncertainty of plus or minus 3.2 meters. See below for average estimated uncertainty values for shorelines extracted from lidar. All lidar shorelines new to the FL/GA dataset have uncertainty recorded on a segment-by-segment basis in the attribute table (i.e., all except 1998/2001 and 1999 which are from data releases doi:10.5066/F74X55X7 and doi:10.5066/F78P5XNK, 2017). See the Uncy field in the shoreline attribute table for individual values. GEORGIA (GA; average estimated positional uncertainty of lidar shorelines): 1999 = plus or minus 4.4 meters 2006 = plus or minus 3.2 meters 2010 = plus or minus 4.2 meters 2016 = plus or minus 5.5 meters FLORIDA EAST COAST (FLec; average estimated positional uncertainty of lidar shorelines): 1999 = plus or minus 2.8 meters 2006 = plus or minus 1.9 meters 2009 = plus or minus 1.8 meters 2010 = plus or minus 2.7 meters 2016 = plus or minus 2.8 meters 2017 = plus or minus 2.9 meters FLORIDA WEST COAST (FLwc; average estimated positional uncertainty of lidar shorelines): 1998 = plus or minus 1.7 meters 2010 = plus or minus 2.2 meters 2015 = plus or minus 2.0 meters 2017 = plus or minus 2.2 meters FLORIDA PANHANDLE (FLph; average estimated positional uncertainty of lidar shorelines): 1998/2001 = plus or minus 1.4 meters 2010 = plus or minus 2.6 meters 2015 = plus or minus 1.7 meters 2016 = plus or minus 1.0 meters 2018 = plus or minus 2.7 meters Lineage: Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS) Publication_Date: Unknown Title: Scanned National Ocean Service (NOS) Coastal Survey Maps (also known as Topographic Survey sheets, or T-sheets) Online_Linkage: https://shoreline.noaa.gov/data/datasheets/t-sheets.html Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1851 Ending_Date: 1980 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: T-sheet shorelines Source_Contribution: T-sheets used for QA/QC of NOAA-digitized 1800s-1980s shorelines and/or used as data source to digitize shorelines. Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA), U.S. Geological Survey (USGS), National Aeronautics and Space Administration (NASA) Publication_Date: 20000101 Title: 1998 Fall Gulf Coast NOAA/USGS/NASA Airborne LiDAR Assessment of Coastal Erosion (ALACE) Project for the US Coastline Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/48152 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1998 Ending_Date: 1998 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 1998 gulf coast lidar Source_Contribution: Lidar data that were used to extract a shoreline. Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA), U.S. Geological Survey (USGS), National Aeronautics and Space Administration (NASA) Publication_Date: 20000101 Title: Fall 1999 East Coast NOAA/USGS/NASA Airborne LiDAR Assessment of Coastal Erosion (ALACE) Project for the US Coastline Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/48158 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1999 Ending_Date: 1999 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 1999 east coast lidar Source_Contribution: Lidar data that were used to extract a shoreline. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey (USGS), National Aeronautics and Space Administration (NASA) Publication_Date: 2009 Title: 2001 USGS/NASA Airborne Topographic Mapper (ATM) Lidar: Coastal Alabama, Florida, Louisiana, Mississippi, Texas Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/50098 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2001 Ending_Date: 2001 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2001 gulf coast lidar Source_Contribution: Lidar data that were used to extract a shoreline. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers (USACE) National Coastal Mapping Program (NCMP)/Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) Publication_Date: 20061114 Title: 2006 US Army Corps of Engineers (USACE) East Coast Topo/Bathy Mapping Project for Florida, Georgia and South Carolina Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/50057 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2006 Ending_Date: 2006 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2006 east coast lidar Source_Contribution: Lidar data that were used to extract a shoreline. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers (USACE) National Coastal Mapping Program (NCMP)/Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) Publication_Date: 2018 Title: 2009 USACE NCMP Topobathy Lidar: Florida Atlantic Coast Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/54218 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2009 Ending_Date: 2009 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2009 FL Atlantic Coast lidar Source_Contribution: Lidar data that were used to extract a shoreline. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers (USACE) National Coastal Mapping Program (NCMP)/Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) Publication_Date: 2017 Title: 2010 US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) Southeast Lidar: Florida, Georgia, South Carolina, North Carolina Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/50093 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2010 Ending_Date: 2010 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2010 Southeast coast lidar Source_Contribution: Lidar data that were used to extract a shoreline. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers (USACE) National Coastal Mapping Program (NCMP)/Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) Publication_Date: 2018 Title: 2010 USACE NCMP Topobathy Lidar: Florida Gulf Coast Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/54215 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2010 Ending_Date: 2010 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2010 FL Gulf coast lidar Source_Contribution: Lidar data that were used to extract a shoreline. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers (USACE) National Coastal Mapping Program (NCMP)/Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) Publication_Date: 201109 Title: 2010 US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) Topobathy Lidar: Alabama Coast and Florida Gulf Coast Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/50083 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2010 Ending_Date: 2010 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2010 AL/FL Gulf coast lidar Source_Contribution: Lidar data that were used to extract a shoreline. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers (USACE) National Coastal Mapping Program (NCMP)/Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) Publication_Date: 20161215 Title: 2015 USACE NCMP Topobathy Lidar: Florida Gulf Coast Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/49720 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2015 Ending_Date: 2015 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2015 FL Gulf coast lidar Source_Contribution: Lidar data that were used to extract a shoreline. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers (USACE)/Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) Publication_Date: 20170215 Title: 2016 USACE Post-Matthew Topobathy Lidar: Southeast Coast (VA, NC, SC, GA and FL) Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/49616 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2016 Ending_Date: 2016 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2016 Southeast coast lidar Source_Contribution: Lidar data that were used to extract a shoreline. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers (USACE) National Coastal Mapping Program (NCMP)/Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) Publication_Date: 20161215 Title: 2016 USACE NCMP Topobathy Lidar: Florida East Coast Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/49722 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2016 Ending_Date: 2016 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2016 FL east coast lidar Source_Contribution: Lidar data that were used to extract a shoreline. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers (USACE) National Coastal Mapping Program (NCMP)/Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX) Publication_Date: 20170913 Title: 2016 USACE NCMP Topobathy Lidar: Gulf Coast (AL, FL, MS, TX) Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/49738 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2016 Ending_Date: 2016 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2016 Gulf coast lidar Source_Contribution: Lidar data that were used to extract a shoreline. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers (USACE), Federal Emergency Management Agency (FEMA) Publication_Date: 20171002 Title: 2017 USACE FEMA Topobathy Lidar: Florida East Coast, Florida Keys, and Collier County (Post Hurricane Irma) Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/49723 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2017 Ending_Date: 2017 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2017 FL east coast lidar Source_Contribution: Lidar data that were used to extract a shoreline. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers (USACE), Federal Emergency Management Agency (FEMA) Publication_Date: 20181108 Title: 2018 USACE FEMA Post-Michael Topobathy Lidar: Florida Panhandle Online_Linkage: https://www.coast.noaa.gov/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/ Online_Linkage: https://www.fisheries.noaa.gov/inport/item/54682 Type_of_Source_Media: digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2018 Ending_Date: 2018 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2018 FL panhandle lidar Source_Contribution: Lidar data that were used to extract a shoreline. Process_Step: Process_Description: Data from the previously-published National Assessment of Shoreline Change study for the sandy shorelines of the Gulf of Mexico and Southeast Atlantic Coasts (USGS Open-File Report 2004-1089 and USGS Open-File Report 2005-1326) as well as the update reports (doi:10.5066/F74X55X7 and doi:10.5066/F78P5XNK, both in 2017) were used as the starting point for this update which includes several new lidar shorelines for Georgia and Florida. The previously published lidar shorelines are from 1998, 1999, and 2001. Source_Used_Citation_Abbreviation: T-sheet shorelines Source_Used_Citation_Abbreviation: 1998 gulf coast lidar Source_Used_Citation_Abbreviation: 1999 east coast lidar Source_Used_Citation_Abbreviation: 2001 gulf coast lidar Process_Date: 2019 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Meredith Kratzmann Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Contact_Voice_Telephone: 508-548-8700 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: mkratzmann@contractor.usgs.gov Process_Step: Process_Description: A profile method was used to extract the operational MHW shoreline from the lidar point cloud data utilizing the Matlab-based approach (Matlab version 2019b) described in Farris and others (2018). Elevation values for the height of MHW were obtained from Weber and others (2005). The profile method used a coast-following reference line with 20-meter spaced profiles. All lidar data points that were within 1 meter of each profile line were associated with that profile. All processing was done on the 2-meter-wide profiles, working on a single profile at a time. For each profile, a linear regression was fit through data points on the foreshore and the regression was evaluated at the MHW elevation to yield the cross-shore position of the MHW shoreline. If there was a data gap at MHW or if the MHW elevation was obscured by water points, the linear regression was simply extrapolated to the MHW elevation. For each profile, the foreshore beach slope was defined as the slope of the regression line. Each MHW shoreline point that was extracted using this profile method has an uncertainty associated with it. This uncertainty includes three components: 1) the 95% confidence interval on the linear regression estimate of the shoreline position; 2) a 15 cm vertical error in the raw lidar data that was converted into a horizontal error using the beach slope; and 3) the uncertainty due to extrapolation (if the shoreline was determined using extrapolation). These three components of uncertainty were added in quadrature to yield a total error for each shoreline point. Farris, A.S., Weber, K.M., Doran, K.S., and List, J.H., 2018, Comparing methods used by the U.S. Geological Survey Coastal and Marine Geology Program for deriving shoreline position from lidar data: U.S. Geological Survey Open-File Report 2018–1121, 13 p., https://doi.org/10.3133/ofr20181121 Weber, K.M., List, J.H., Morgan, K.L.M., 2005, An Operational Mean High Water Datum for Determination of Shoreline Position from Topographic Lidar Data: U.S. Geological Survey Open-File Report 2005–1027, https://doi.org/10.3133/ofr20051027 Lidar shorelines were extracted by Amy Farris, Kathy Weber, Zehao Xue, and Marie Bartlett of the USGS from 2015 through 2020 using the method described in this step. Source_Used_Citation_Abbreviation: 2006 east coast lidar Source_Used_Citation_Abbreviation: 2009 FL Atlantic Coast lidar Source_Used_Citation_Abbreviation: 2010 Southeast coast lidar Source_Used_Citation_Abbreviation: 2010 FL Gulf coast lidar Source_Used_Citation_Abbreviation: 2010 AL/FL Gulf coast lidar Source_Used_Citation_Abbreviation: 2015 FL Gulf coast lidar Source_Used_Citation_Abbreviation: 2016 Southeast coast lidar Source_Used_Citation_Abbreviation: 2016 FL east coast lidar Source_Used_Citation_Abbreviation: 2016 Gulf coast lidar Source_Used_Citation_Abbreviation: 2017 FL east coast lidar Source_Used_Citation_Abbreviation: 2018 FL panhandle lidar Process_Date: 2020 Source_Produced_Citation_Abbreviation: GA 2006 lidar shoreline Source_Produced_Citation_Abbreviation: FLec 2006 lidar shoreline Source_Produced_Citation_Abbreviation: FLec 2009 lidar shoreline Source_Produced_Citation_Abbreviation: GA 2010 lidar shoreline Source_Produced_Citation_Abbreviation: FLec 2010 lidar shoreline Source_Produced_Citation_Abbreviation: FLwc 2010 lidar shoreline Source_Produced_Citation_Abbreviation: FLph 2010 lidar shoreline Source_Produced_Citation_Abbreviation: FLwc 2015 lidar shoreline Source_Produced_Citation_Abbreviation: FLph 2015 lidar shoreline Source_Produced_Citation_Abbreviation: GA 2016 lidar shoreline Source_Produced_Citation_Abbreviation: FLec 2016 lidar shoreline Source_Produced_Citation_Abbreviation: FLph 2016 lidar shoreline Source_Produced_Citation_Abbreviation: FLec 2017 lidar shoreline Source_Produced_Citation_Abbreviation: FLph 2018 lidar shoreline Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Amy Farris Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Contact_Voice_Telephone: 508-548-8700 x2344 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: afarris@usgs.gov Process_Step: Process_Description: The lidar shoreline shapefiles were then visually checked against imagery contained in Esri's World_Imagery GIS server to make sure the shoreline was not interpolated through a headland or structure, for example. Attribute fields were added (based on DSAS requirements described in the DSAS v5 User Guide) to the attribute table and those fields were populated with the relevant information. This process step and all other process steps were performed by the same person - Meredith Kratzmann. Process_Date: 2020 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Meredith Kratzmann Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Contact_Voice_Telephone: 508-548-8700 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: mkratzmann@contractor.usgs.gov Process_Step: Process_Description: Historical (1800s-1980s) and previously published lidar shorelines (1998/2001, 1999) were merged with the new lidar shorelines (2006-2018) in ArcToolbox v10.7 > Data Management Tools > General > Merge to produce a single shoreline file for each region. Process_Date: 2020 Process_Step: Process_Description: The shorelines file was imported into a personal geodatabase in ArcCatalog v10.7 by right-clicking on the geodatabase > Import (feature class) for use in the DSAS v5 software to perform rate calculations. Process_Date: 2020 Process_Step: Process_Description: The shoreline feature class was exported from the personal geodatabase back to a shapefile in ArcCatalog v10.7 by right-clicking on the shoreline file > Export > To Shapefile (single) for publication purposes. Process_Date: 2020 Process_Step: Process_Description: The data were projected in ArcToolbox v10.7 > Data Management Tools > Projections and Transformations > Project. Parameters: input projection = UTM zone 17N (WGS84); output projection = geographic coordinates (WGS84); transformation = none. Process_Date: 2021 Process_Step: Process_Description: Updated the cross-reference information with regards to the related Data Report (20220427). The metadata available from a harvester may supersede metadata bundled with the dataset. Compare the metadata dates to determine which metadata file is most recent. Process_Date: 20220427 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Address: Address_Type: mailing and physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: (508) 548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 1450 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0197395052 Longitude_Resolution: 0.0264490611 Geographic_Coordinate_Units: Decimal seconds Geodetic_Model: Horizontal_Datum_Name: WGS_1984 Ellipsoid_Name: WGS_84 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: FLwc_shorelines Entity_Type_Definition: Shorelines for Florida west coast (FLwc) used in shoreline change analysis. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: DATE_ Attribute_Definition: Date of shoreline position; date of survey as indicated on source material. A default date of 07/01 was assigned to shorelines where only the year was known (month and day unknown). Using July, the mid-point month of the calendar year, minimizes the potential offset to the actual shoreline date by a maximum of six months. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Date of the shoreline in mm/dd/yyyy Attribute: Attribute_Label: Uncy Attribute_Definition: Estimate of shoreline position uncertainty. Actual shoreline position is within the range of this value (plus or minus, meters). The historic shoreline uncertainty values incorporate measurement uncertainties associated with mapping methods and materials for historical shorelines, the geographic registration of shoreline position, and shoreline digitizing. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.65 Range_Domain_Maximum: 10.8 Attribute: Attribute_Label: Source Attribute_Definition: Agency that provided shoreline feature or the data source used to digitize shoreline feature. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Character string of length 25 Attribute: Attribute_Label: Source_b Attribute_Definition: Type of data used to create shoreline. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: lidar Enumerated_Domain_Value_Definition: Light detection and ranging (lidar). Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: T or TP with number Enumerated_Domain_Value_Definition: NOAA/NOS topographic survey sheet (T- or TP-sheet) with associated registry number. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: aerials (or Photo rev., unknown) with letters and numbers and/or year Enumerated_Domain_Value_Definition: FLDEP aerial photo with associated registry information. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Year_ Attribute_Definition: Four digit year of shoreline Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1858 Range_Domain_Maximum: 2017 Attribute: Attribute_Label: Default_D Attribute_Definition: Differentiates between shorelines that have known month and day attributes and those that use the default value of 07/01 when only the year is known. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: Shoreline month and day are known. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1 Enumerated_Domain_Value_Definition: Shoreline month and day are unknown and default value of 07/01 was used. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Location Attribute_Definition: Location of shoreline with respect to wave energy exposure. An open ocean coast is directly exposed to ocean waves and is typically characterized by higher wave energy. A sheltered coast is not directly exposed to ocean waves and is characterized by lower wave energy. This shoreline dataset includes only open ocean locations. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: open ocean Enumerated_Domain_Value_Definition: Shoreline on a coast with open ocean wave exposure. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Shape_Leng Attribute_Definition: Length of shoreline in meter units (UTM zone 17N WGS84). Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Science Center Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.159136 Range_Domain_Maximum: 26533.604388 Attribute: Attribute_Label: DSAS_type Attribute_Definition: Shoreline type field used to specify the datum to which the shoreline is referenced. It is a required field when proxy-based and datum-based shorelines are combined to compute rates in DSAS. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: MHW Enumerated_Domain_Value_Definition: Mean High Water (datum-based shoreline). Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: HWL Enumerated_Domain_Value_Definition: High Water Line (proxy-based shoreline). Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: ATTRIBUTE Attribute_Definition: Additional notation regarding source of shoreline data. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Character string of length 50 Overview_Description: Entity_and_Attribute_Overview: The entity and attribute information provided here describes the tabular data associated with the dataset. Please review the individual attribute descriptions for detailed information. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: mailing and physical address Address: Federal Center, Building 810, MS 302 City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: The dataset contains polyline shorelines (SHP and other shapefile components), browse graphic, and the FGDC CSDGM metadata. Distribution_Liability: Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), and have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Shapefile Format_Version_Number: ArcGIS 10.7 Format_Specification: Esri polyline shapefile Format_Information_Content: These files (.cpg, .dbf, .prj, .sbn, .sbx, .shp, .html, and .shx) are a collection of files with a common filename prefix and must be downloaded and stored in the same directory. Together they are the components of the shapefile and include FGDC CSDGM-compliant metadata in HTML format. Transfer_Size: 1.5 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.5066/P9J3CVN4 Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/614a7c8fd34e0df5fb9756e1 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/614a7c8fd34e0df5fb9756e1 Access_Instructions: The first link is to the USGS publication page, the second link downloads all the data on the landing page, and the third link is to the dataset landing page. Fees: None Technical_Prerequisites: These data are available in a polyline shapefile format. The user must have software to read and process the data components of a shapefile. Metadata_Reference_Information: Metadata_Date: 20220427 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Meredith G. Kratzmann Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: mkratzmann@contractor.usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time